Multi-specification travel switch batch fatigue testing machine

Abstract

The invention relates to the technical field of fatigue testing, and discloses a multi-specification travel switch batch fatigue testing machine which comprises a machine base used for bearing a device. The fixing mold is used for fixing the limiting switch; the device comprises a fixed die and an insulation block, the bottoms of the insulation block and the fixed die are fixedly connected with transmission blocks, the tops of the transmission blocks are provided with sliding block assemblies, the fixed die and the insulation block are used for fixing a limit switch, the insulation block and the fixed die are combined with each other, and the side walls of the insulation block and the fixed die are fixedly connected with stroke adjusting blocks. According to the invention, the limit switch is placed on the side wall of the fixed mold, then the adjusting screw is rotated to drive the top block to be close to the side wall of the limit switch, and the limit switch is supported by the stroke adjusting block, so that the effect of testing fatigue of a large number of tests is achieved, and the problem of failure of the limit switch in equipment is solved. And therefore, the practicability of the fatigue testing machine is improved.

Description

Technical Field

[0001] The invention relates to the technical field of fatigue testing, in particular to a batch fatigue testing machine for travel switches with multiple specifications. Background Art

[0002] In today's highly industrialized and automated world, electronic equipment and various control systems are widely used in numerous fields. As an indispensable and critical component in these systems, limit switches' reliability and stability are directly related to the safe operation and performance of the entire system. With the market's increasing demands for electronic product quality and the continued expansion of production scale, the need for accurate assessment of the durability and failure modes of limit switches is becoming increasingly urgent. Multi-specification limit switch batch fatigue testing machines have emerged to meet the needs of efficient, accurate, and batch fatigue testing of limit switches of varying specifications, ensuring their stable and reliable operation under a variety of complex operating conditions. This provides strong data support and technical assurance for improving the quality and reliability of the entire electronic system.

[0003] In the early stages of technological development, testing equipment for limit switches typically employed a relatively simple mechanical structure. Typically, a basic motor drive mechanism activated the limit switch through a simple connecting rod or cam mechanism. This principle primarily relied on the motor's constant rotation, driving the connecting rod or cam in periodic reciprocating motion. This caused the limit switch to repeatedly open and close, simulating actual operating conditions. During testing, a simple counter recorded the number of limit switch actuations to determine its fatigue life. However, this traditional testing equipment lacked flexibility and versatility when it came to testing a wide range of limit switches. It struggled to quickly and accurately adapt to switches with varying travels, sizes, and trigger forces. Furthermore, its relatively limited test data collection and analysis methods failed to meet the high-precision, high-efficiency testing requirements of modern industry.

[0004] However, traditional fatigue testing technology for travel switches has serious limitations, making it difficult to meet the demands of large-scale, multi-specification travel switch failure testing. For example, due to the single, fixed nature of its mechanical structure, testing travel switches of varying specifications often requires significant time and manpower to replace and adjust relevant test equipment components to accommodate the new switch specifications. This not only results in low testing efficiency and fails to meet the time constraints of batch testing in large-scale production, but frequent equipment adjustments also easily introduce human error, impacting the accuracy and reliability of test results. Furthermore, traditional equipment cannot simultaneously test multiple travel switches of varying specifications, significantly limiting the batch size and parallelization of testing. This makes it difficult to obtain sufficient test data in a short period of time, hindering a comprehensive and in-depth assessment of the fatigue performance and failure modes of travel switches of varying specifications under various operating conditions. This severely restricts the ability of electronic equipment manufacturers to control travel switch quality and optimize their products, making it difficult to adapt to the rapid pace of modern industry. Therefore, a multi-specification travel switch batch fatigue testing machine has been proposed to address these issues. Summary of the Invention

[0005] In order to make up for the above shortcomings, the present invention provides a batch fatigue testing machine for multi-specification travel switches, aiming to improve the problem that the equipment for travel switch failure testing in the prior art cannot meet the requirements of large-scale and multi-specification travel switch failure testing.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] Multi-specification travel switch batch fatigue testing machine, including:

[0008] A machine base, the machine base being used to carry the device;

[0009] A fixed mold, the bottom of which is arranged on the top of the machine base, and the fixed mold is used to fix the limit switch;

[0010] The fixed mold and the insulating block, the bottom of the insulating block is set on the top of the machine base, the insulating block and the bottom of the fixed mold are fixedly connected to the transmission block, the top of the transmission block is provided with a slider assembly, the fixed mold and the insulating block are used to fix the limit switch, the insulating block and the fixed mold are merged with each other, the insulating block and the side wall of the fixed mold are fixedly connected with a stroke adjustment block, the stroke adjustment block is used to adjust the limit switch angle, and the insulating block is used for insulation to prevent electric current from injuring people;

[0011] As a further description of the above technical solution:

[0012] The side wall of the stroke adjustment block is fixedly connected to an adjusting screw, the outer wall of the adjusting screw is slidably connected to a top block, and the side wall of the top block is arranged on the side wall of the stroke adjustment block;

[0013] As a further description of the above technical solution:

[0014] A protective cover is provided on the top of the machine base, and the machine base and the protective cover are embedded;

[0015] As a further description of the above technical solution:

[0016] The side wall of the base is fixedly connected with a control panel, and the control panel is used to display the number of measurements and adjust the speed;

[0017] As a further description of the above technical solution:

[0018] A planetary reducer is rotatably connected inside the machine base, an eccentric wheel is provided on the outer wall of the planetary reducer, and the outer wall of the eccentric wheel is rotatably connected to the inside of the working panel;

[0019] As a further description of the above technical solution:

[0020] The outer wall of the slider assembly is arranged inside the working panel, and the bottom of the slider assembly is fixedly connected to the top of the control panel.

[0021] The present invention has the following beneficial effects:

[0022] In the present invention, the limit switch is placed on the side wall of the fixed mold, and then the top block is driven close to the side wall of the limit switch by rotating the adjusting screw, and the limit switch is supported by the stroke adjusting block, thereby achieving a large number of test fatigue effects, solving the problem that the equipment for the stroke switch failure test in the prior art cannot meet the requirements of large-scale and multi-specification stroke switch failure tests, and improving the practicality of the fatigue testing machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a three-dimensional schematic diagram of a batch fatigue testing machine for travel switches of multiple specifications proposed by the present invention;

[0024] Figure 2 This is a schematic diagram of the top structure of the base of the multi-specification travel switch batch fatigue testing machine proposed by the present invention;

[0025] Figure 3 for Figure 1 Enlarged view of point A in the middle.

[0026] Legend:

[0027] 1. Machine base; 2. Control panel; 3. Working panel; 4. Slider assembly; 5. Transmission block; 6. Insulation block; 7. Fixed mold; 8. Stroke adjustment block; 9. Top block; 10. Adjustment screw; 11. Eccentric wheel; 12. Planetary reducer; 13. Protective cover. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Reference Figure 1-Figure 3 The present invention provides an embodiment: a batch fatigue testing machine for multi-specification travel switches, comprising:

[0030] The base 1 and the bottom of the fixed mold 7 are set on the top of the base 1, which is usually made of high-strength cast iron or aluminum alloy with good rigidity and stability. The base 1 is used to carry the device;

[0031] The fixed mold 7 is made of tool steel with high hardness. The tool steel has high hardness and good wear resistance. After heat treatment processes such as quenching, it can be accurately processed into a shape and size that matches the limit switch and can firmly fix the limit switch. The fixed mold 7 is used to fix the limit switch;

[0032] The fixed mold 7 and the insulating block 6 are made of epoxy insulating board or ceramic material, which has high insulation resistance and mechanical strength, can effectively isolate the current, and prevent the operator from being electrocuted due to accidental leakage during the test. The strength and toughness are moderate. After proper heat treatment, it can withstand the driving force from the motor and the torque during the transmission process. The bottom of the insulating block 6 is set on the top of the machine base 1. The insulating block 6 and the bottom of the fixed mold 7 are fixedly connected with the transmission block 5, which is made of high-quality carbon steel. The top of the transmission block 5 is provided with a slider assembly 4, which is made of copper alloy and has good wear resistance and certain self-lubricating properties. When sliding in contact with the inside of the working panel 3, it can reduce friction resistance. The fixed mold 7 and the insulating block 6 are used to fix the limit switch. The insulating block 6 and the fixed mold 7 are merged with each other. The side walls of the insulating block 6 and the fixed mold 7 are fixedly connected with a stroke adjustment block 8. The stroke adjustment block 8 is used to adjust the limit switch angle. The insulating block 6 is used for insulation to prevent current from hurting people. The side wall of the stroke adjustment block 8 is fixedly connected with an adjusting screw 10, which is made of high-strength alloy steel and has high strength and toughness. After heat treatment processes such as quenching and tempering, its threaded part can withstand large tightening and adjustment torques, and is not prone to slippage, breakage, etc. The outer wall of the adjusting screw 10 is slidably connected to a top block 9, and the side wall of the top block 9 is set on the side wall of the stroke adjustment block 8. A protective cover 13 is set on the top of the machine base 1. It is made of transparent polycarbonate, which has good transparency, high strength and toughness, and can clearly observe the operation of the device inside. At the same time, it can effectively prevent the operator from being injured by accidental flying out of the components during the test. The machine base 1 and the protective cover 13 are embedded. The side wall of the machine base 1 is fixedly connected to the control panel 2. The control panel 2 is used to display the number of measurements and adjust the speed. The planetary reducer 12 is rotatably connected to the inside of the machine base 1. Medium carbon steel is selected. After appropriate heat treatment, it has good strength and toughness and can withstand centrifugal force, friction and other forces during rotation. The outer wall of the planetary reducer 12 is set with an eccentric wheel 11. The outer wall of the eccentric wheel 11 is rotatably connected to the inside of the working panel 3. The outer wall of the slider assembly 4 is set inside the working panel 3, and the bottom of the slider assembly 4 is fixedly connected to the top of the control panel 2;

[0033] Specifically, in the batch fatigue test operation of multi-specification travel switches, first select the appropriate eccentric wheel 11 from the numerous eccentric wheels 11 according to the travel switch specifications and replace it carefully to ensure the accuracy and reliability of the test. Then, debug the test data on the control panel 2, covering key parameters such as travel, pressure, frequency, etc., whose precise setting is related to the effectiveness of the results. Then, select the appropriate fixed mold 7 according to the limit switch to prevent the travel switch from falling, avoiding interference with the test and damage to the equipment. After preparation, press the switch, and the motor in the machine base 1 drives the transmission block 5 to rotate at a uniform speed. The transmission block 5 first moves away from the insulating block 6 to make space, and then the fixed mold 7 with the limit switch is firmly fixed on the top of the insulating block 6, and then fine-tuned through the travel adjustment block 8. The section is in the appropriate position, which affects the triggering effect and test accuracy. After the adjustment is completed, the motor drives the transmission block 5 to move smoothly close to the side wall of the fixed mold 7. After the transmission block 5 is in place, let the stroke adjustment block 8 lightly press the switch to get an electric shock. Pay attention to controlling the pressure, and then fine-tune the stroke adjustment block 8 to adjust the distance to prevent damage to the stroke switch and ensure the stability of the test. During the test, the control panel 2 accurately displays key data such as the number of triggers and working time in real time, which is convenient for the operator to grasp the situation and deal with abnormalities. Before starting the test, check that there is no foreign matter on the working panel 3 and cover it with the protective cover 13 to provide a stable environment and ensure safety. Finally, start the machine for a failure test to evaluate the fatigue performance of the stroke switch and provide data support for quality improvement.

[0034] Working principle: When using a batch fatigue testing machine for multi-specification travel switches, first select the eccentric wheel 11 with a suitable travel and replace it, then debug each group of test data through the control panel 2, and then select the appropriate fixed mold 7 according to the limit switch to prevent the travel switch from falling, and then press the switch, and the motor inside the machine base 1 drives the transmission block 5 to rotate, and then the transmission block 5 rotates and moves away from the insulating block 6 to make rotation space, and then fix the fixed mold 7 with the limit switch on the top of the insulating block 6, and then adjust it to the appropriate position through the travel adjustment block 8, and then drive the transmission block 5 close to the side wall of the fixed mold 7 through the motor, and then let the travel adjustment block 8 press on the switch contact, and then adjust the travel adjustment block 8 to adjust the distance to prevent damage to the travel switch, and finally display the real-time and accuracy of the data through the control panel 2, and finally check that there is no foreign matter on the working panel 3, cover the protective cover 13, and start the failure test.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. Multi-specification travel switch batch fatigue testing machine, characterized by: include: A machine base (1), wherein the machine base (1) is used to carry the device; A fixed mold (7), the bottom of which is arranged on the top of the machine base (1), and the fixed mold (7) is used to fix the limit switch; A fixed mold (7) and an insulating block (6), the bottom of the insulating block (6) is arranged on the top of the machine base (1), the bottoms of the insulating block (6) and the fixed mold (7) are fixedly connected with a transmission block (5), the top of the transmission block (5) is provided with a slider assembly (4), the fixed mold (7) and the insulating block (6) are used to fix the limit switch, the insulating block (6) and the fixed mold (7) are merged with each other, the side walls of the insulating block (6) and the fixed mold (7) are fixedly connected with a stroke adjustment block (8), the stroke adjustment block (8) is used to adjust the limit switch angle, and the insulating block (6) is used for insulation to prevent electric current from injuring people.

2. The multi-specification travel switch batch fatigue testing machine according to claim 1, characterized in that: The side wall of the stroke adjustment block (8) is fixedly connected with an adjustment screw (10), the outer wall of the adjustment screw (10) is slidably connected with a top block (9), and the side wall of the top block (9) is arranged on the side wall of the stroke adjustment block (8).

3. The multi-specification travel switch batch fatigue testing machine according to claim 1, characterized in that: A protective cover (13) is provided on the top of the machine base (1), and the machine base (1) and the protective cover (13) are engaged with each other.

4. The multi-specification travel switch batch fatigue testing machine according to claim 1, characterized in that: A control panel (2) is fixedly connected to the side wall of the machine base (1), and the control panel (2) is used to display the number of measurements and adjust the speed.

5. The multi-specification travel switch batch fatigue testing machine according to claim 1, characterized in that: A planetary reducer (12) is rotatably connected inside the machine base (1), an eccentric wheel (11) is provided on the outer wall of the planetary reducer (12), and the outer wall of the eccentric wheel (11) is rotatably connected inside the working panel (3).

6. The multi-specification travel switch batch fatigue testing machine according to claim 1, characterized in that: The outer wall of the slider assembly (4) is arranged inside the working panel (3), and the bottom of the slider assembly (4) is fixedly connected to the top of the control panel (2).

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